"The Singijeon - or magical machine arrows - was an early type of rocket. Invented shortly after the Koreans learned the secret of gunpowder from China in the 13th century, the Singijeon consisted of a shoulder-mounted tube containing a single rocket. As with all such rockets, accuracy was somewhat dubious, but the effects were spectacular when (if) the missile would hit anything."

Singijeon can be used as good Alliance Troops. One example is that they can shoot over walls to attack troops of the attackers forcing the troops to destroy the wall to kill them. Another thing is that they're good against other heavy infantry.